A California inventor is engaged on a sweeper you possibly can pull behind your bike

Bike Lane Sweeper prototype in motion. Watch a video under.
(Images: Pierre Lermant/

A reader from the San Francisco Bay space noticed our current story on town’s bikeway-sized road sweeper and wished us to know he’s taking the thought just a few steps additional.

Pierre Lermant has a background in mechanical and software program engineering and has developed a number of prototypes of a motorbike lane sweeper that’s towed behind a bicycle. His creation takes the DIY sweeper we shared again in 2018 and strikes it a number of notches up the chain of evolution.

(Newest prototype on the left. The appropriate-angle sweeper design on the fitting.)

Since we’re fascinated and pissed off by the persistent downside of debris-filled bikeways, I used to be glad to listen to from Lermant. I requested him to share extra about himself and his creation.

Lermant, who grew up in Paris, France and now lives in Sunnyvale, California the place he works remotely for on-line fee large PayPal, mentioned he was impressed to create his sweeper after seeing the poor state of motorbike lanes on his 10-mile commute. “Though the San Francisco bay space enjoys increasingly more bike lanes and bike paths,” he shared with me in an e-mail, “a lot of them will not be being cleaned by typical metropolis sweepers, both as a result of they don’t border residential areas, or due to their bodily traits (assume protected bike lanes).”

“To treatment the scenario, I considered constructing bicycle-towable bike lane sweepers that may complement typical metropolis sweepers and rid bike lanes of particles no matter their location and configuration.”

Listed here are just a few movies of the sweeper in use:

Lermant is prototyping two variations: a sweeper with an angled brush that pushes particles into the gutter and doesn’t want an on-board hopper; and a model with a hopper that collects the particles it sweeps up. He says he plans to productize the ‘sweep-to-the-side’ mannequin first as a result of it has fewer components and is less complicated and cheaper to construct (as a result of there’s no hopper to empty).

Listed here are just a few tech specs of his present iteration:

– The sweeping brush spins at about 150 rpm. It’s product of polypropylene bristles, just like the fabric utilized in municipal mechanical road sweepers.
– Electrical motor with a built-in 10x gear reducer produces loads of torque. Powered by a chargeable battery. A easy sprocket+chain mechanism transfers rotational energy from the motor to the comb.
– An articulated tow bar mixed with a low resistance extension spring permits for positive tuning of the comb downward strain with a low price, easy and sturdy mechanical resolution.
– A hitch, just like those discovered on youngsters bike trailers, connects the sweeper tow bar to the rear hub of a bicycle, typical or e-bike, with a wheel measurement between 26″ to 29″.
– Given its modest measurement and weight, this eco-sweeper requires little vitality to tow, particularly on the prescribed pace of three mph to 7 mph.
– The general system is underneath a non-provisional utility patent utility.

Based on Lermant, he plans to promote these sweepers to each direct retail customers and organizations. Long run he expects municipal governments and companies to buy fleets to complement different sweeping tools. Pricing isn’t finalized but, however Lermant says anybody is welcome to contact him ( if they’re fascinated by buying or borrowing a prototype for testing.

He’d additionally recognize any suggestions or insights to assist make his product even higher.

Think about having one thing like this out there at your native ironmongery store! Good luck Pierre!